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Gray/Portland, ME Local Forecast Office

14NM NE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 64 °F
SSW 10kt
< 1ft
Monday
High: 71 °F
S 10kt
< 1ft
Monday Night
Low: 64 °F
Light Wind
< 1ft
Tuesday
High: 74 °F
Light Wind
< 1ft
Tuesday Night
Low: 62 °F
Light Wind
< 1ft
Wednesday
High: 77 °F
Light Wind
< 1ft
Wednesday Night
Low: 63 °F
Light Wind
< 1ft
Thursday
High: 77 °F
Light Wind
< 1ft
Thursday Night
Low: 59 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:32 pm EDT Aug 16, 2026
Forecast Valid: 8pm EDT Aug 16, 2026-6pm EDT Aug 23, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind around 10 kt. A chance of showers, mainly after 4am. Seas 1 ft or less.

Monday

S wind around 10 kt, with gusts as high as 20 kt. Showers likely, mainly before 4pm. Patchy fog between 2pm and 4pm, then Patchy fog after 5pm. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers, mainly before 8pm. Patchy fog before 7pm, then Patchy fog after 8pm. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. Cloudy, then gradually becoming mostly sunny. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.